I sell a lot on ebay, and was just printing shipping labels on plain paper, then taping them on packages with packing tape. The labels are much easier and faster, leaving me more time for fun things!
I've used Avery labels as well as generic or store brand labels for years. The Avery labels always work as expected. That can't be said about the others. Easy to peel, perforations correctly cut and stick like they're meant to.
I've had it happen so many times when I try and print a shipping label to go over another one that you could see all of the underlying information. I was so tired of it. When these came out, it was great. Now you cover that bad-boy up and never have to worry about the top label being the only one visible!!